Nancy Diep
Partner | Calgary
Calgary: 403-260-9779

Nancy's practice focuses primarily on the tax aspects of mergers, acquisitions and reorganizations, including cross-border transactions or financings and intragroup restructurings. She particularly specializes in the area of resource taxation.

Nancy has worked on a wide variety of transactions for multinationals, private companies, senior, intermediate and junior resource issuers, income and royalty trusts, and private equity groups.


Select recent experience includes:

  • Trinidad Drilling Ltd.'s announced $505-million merger with CanElson Drilling Inc.


  • Privatization of Platino Energy Corp. by Denham Capital Management LP


  • LNG Canada Development Inc. in connection with its arrangements with TransCanada Corporation to design, build, own and operate the proposed Coastal GasLink Pipeline Project (Coastal GasLink). The proposed project involves the construction and operation of an approximately 650 km natural-gas pipeline from the Groundbirch area near Dawson Creek, B.C. to the proposed LNG Canada liquefied-natural-gas export facility near Kitimat, B.C. Coastal GasLink is subject to regulatory approvals and a final investment decision by LNG Canada


  • Petrobank Energy and Resources Ltd. on its combination arrangement with Touchstone Exploration Inc.


  • Suncor on the C$515-million acquisition of Total E&P's interest in the Voyageur Upgrading Limited Partnership


  • C&C Energia Ltd. in connection with its acquisition by Pacific Rubiales Energy Corp. and spin-out and listing of Platino Energy Corp., an exploration stage oil and gas company
  • ExxonMobil Canada Ltd. on its C$3.1-billion acquisition of Celtic Exploration Ltd.
  • Charger Energy Corp. on its amalgamation with Pace Oil & Gas Ltd. and AvenEx Energy Corp.

Nancy is recognized as one of Canada's leading corporate tax lawyers by:

  • The Best Lawyers in Canada 2018(Tax)

  • Who's Who Legal: Canada 2017(Tax)

  • The 2016 Lexpert Guide to the Leading US/Canada Cross-Border Corporate Lawyers in Canada (Corporate Lawyers to Watch)


  • The Canadian Legal Lexpert Directory 2016 (Corporate Tax)


  • International Tax Review's Women in Tax Leaders 2016


  • Lexpert's Rising Stars 2015: Leading Lawyers Under 40
Show Past:
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Author: Expanding Farm-Outs to Royalties
Resource Sector Taxation, Vol. X, No. 1, Federated Press, pp. 20-22, 2017.
Co-author: Modern Approach to Statutory Interpretation
Canadian Tax Journal, pg. 483-490, Volume 62, No. 2 (2014).
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Presenter: Preferred Share Rules: The Expected, Unexpected and Unintended
2017 Prairie Provinces Tax Conference, Canadian Tax Foundation, Edmonton, Alberta, May 30, 2017.
Co-presenter: Safe Income Workshop
2016 Annual Tax Conference, Canadian Tax Foundation, Calgary, Alberta, November 27, 2016.
Co-presenter: Reconsidering Tax Policy, Principles and Administration
Today's Environment 2016 Annual Conference, Canadian Petroleum Tax Society, Calgary, Alberta, June 15, 2016.
Co-presenter: Recent M&A and Case Law Update
2015 IFA International Tax Conference, International Fiscal Association (Canadian Branch), Calgary, Alberta, May 28-29, 2015.
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